SU429072A1 - METHOD OF ANTISTATIC TREATMENT OF THERMOPLASTIC POLYMERS - Google Patents

Description

one

The invention relates to antistatic processing methods for polymers by applying to them or adding quaternary ammonium compounds to the mass of salts.

The known method of antistatic treatment of polymers by applying to them or adding to the mass of salts Quaternary ammonium compounds of the general formula

at,

R, -N - R.

R,

where RI is the naphthenyl radical (naphthenic acid residue);

Kg - SNGNGOI, (SNGSigO); Кз - СНгСНаОН, (СН2СН20) уН,

. gd; -rg / 2 + 13;

R4-CHs-SbNy, SNz, SNgSNoON;

A C1-, CH3804-.

When applied on the surface, the specific surface resistance (pd) of these destatized polymers is 5 ,,., Li at a temperature of 20 ± 3 ° C and a relative humidity of 65 ± 5%, and when antistatic agents are introduced into the mass of polymers ps of samples it is 4.8 10 ° -2.0-10 ohm

A method of antistatic treatment of thermoplastic polymers (e.g. polyethylene, polystyrene, polymethyl methacrylate) is proposed by applying to the surface or adding quaternary ammonium compounds to the mass of salts, in which ammonium salts are used to improve the antistatic properties of quaternary ammonium compounds following formula

T +

BUT

15

20

where R is an alkyl radical of Ci-GS or hydroxyethyl radical -SP2CH20Y;

R is an alkyl radical of Ci-Cis; , Br-, I- NOs-, SO ,, -, SIZ5O.g,

(CH3) 2PO4- or C1O4-.

When the surface deposition of ferrocene-containing ammonium salts but proposed

Polymers for ps of samples are 3, 10–108 ohms at 20 ± 3 ° C and a relative humidity of 65 ± 5%. The polymer samples obtained by the proposed method with internal introduction of ferrocene-containing ammonium salts have p 1.3-108-2.0-ohm at 20 ± 3 ° C and a relative humidity of 65 ± 57 ° and have a yield strength at stretching (a) 90- 240 kgf / cm tensile strength at stretching (0p) 124-142 kgf / cm and relative elongation at break (e) 140-610%. Ferrocene-containing ammonium salts used in the proposed method have a higher antistatic efficiency compared to the most effective industrial antistatic agents such as alkamon (PS polymer samples with the introduction of alkamon to a mass of at least 3.3-10 ohms, when applied superficially 4, 1.10 ohm} Ferrocene-containing ammonium salts are deposited on the surface of polymers by the proposed method from solutions of 0.5–4% concentration in organic solvents. Ferrocene-containing ammonium salts are introduced into the mass of polymer in Tve 0.5-6.0 wt.%. Example 1. Disks with a diameter of 50 mm and a thickness of 1 mm of low density polyethylene are immersed for 20 seconds in a 2% solution of trimethyl (methylferrocene) ammonium chloride in ethylene alcohol and then dissolved at room temperature temperature at an angle of 45 ° during the day, the samples treated in this way are 9.1-10 ohms at 20 ± 3 ° C and a relative humidity of 65 ± 5%. Example 2. Disks 50 mm in diameter and 1 mm thick from low polyethylene density is immersed for 20 seconds in a 4% solution of trimethyl (methylferrocene) ammonium iodide in ethanol and then present atnoy temperature at 45 ° for one day. The PS of samples treated in this way is 1.6-10 ohms at 20 ± 3 ° C and a relative humidity of 65 ± 5%. Example 3. Disks 50 mm in diameter and 1 mm thick from polypropylene are immersed for 20 seconds in 4% solution of trimethyl (methylferrocene) ammonium dimetaphosphate in ethyl alcohol and then dissolved at room temperature at an angle of 45 ° during the day, ps of samples treated in this way is 9.0-10 ohms at 20 ± 3 ° C and a relative humidity of 65 ± 5%. Example 4. A disk; and with a diameter of 58 mm and a thickness of 2 mm from polystyrene, immerse for 20 seconds in a 2% solution of trimethyl (methylferrocene) ammonium dimetaphosphate in ethyl alcohol and then dissolve at room temperature at an angle of 45 ° for a day, p treated with such the sample method is 8.3-10 ohms, at 20 ± 3 ° C and a relative humidity of 65 ± 5%. EXAMPLE 5. Discs with a diameter of 58 mm and a thickness of 2 mm made of polymethyl methacrylate are immersed for 20 seconds in a 2% solution of trimethyl (methylferrocb) ammonium iydimetaphosphate in ethyl alcohol and then existing at room temperature at an angle of 45 ° during the day. . The p.5 of the samples treated in this way is 7.0-10 ohms at 20 ± 3 ° C and a relative humidity of 65 ± 5%. Ex. 6. Discs 58 mm in diameter and 2 mm thick from impact polystyrene are immersed for 20 seconds in a 4% solution of trimethyl (methylferrocene) ammonium iodide in ethanol and then dissolved at room temperature at an angle of 45 ° during the day. The PS of samples treated in this way is 2.0-10 ohms at 20 ± 3 ° C and a relative humidity of 65 + 5%. Examples 7-23. Ferrocene-containing ammonium salts are applied to the surface of polymers in the same way as in examples 1-6. The results are shown in Table. 1. Example 24. Low-density polyethylene is shifted from 1.0 wt.% Trimethyl (methyl ferrocep) ammonium dimetaphosphate on rollers at 135 ±: 5 ° С for 7 minutes. The samples obtained have a p 1.4-10 ° Ω at 20 ± 3 ° C and a relative humidity of 65 ± 5% and have a crg 95 KGS / CM2, (Tp 128 kgf / cm and s 530%. Example 25. Low-density polyethylene is shifted with 4.0 wt.% trimethyl (methylferrocene) ammonium iodide on rollers at 155 ± 5 ° C for 7 months. The obtained samples have a ps 7.0-10 ohms at 20 ± 3 ° C and a relative humidity of 65 ± 5% and have From 215 kgf / cm2, ar 130 kgf / cm and e 160%. Examples 26-29. Ferrocene-containing ammonium salts are biased with low density polyethylene as in Example 24. The results are shown in Table 2. Examples 30-34. ammonium and mixed with high density polyethylene in the same manner as in Example 25. The results are shown in Table. 2.

The specific surface resistance of the polymer in the surface deposition of ferro-cited ammonium salts

Table 1

Table 2

Subject and s about b e e i and and

Antistatic treatment of thermoplastic polymers by applying to the surface or adding quaternary ammonium compounds to the mass, characterized in that, in order to improve antistatic properties, ferrocene containing ammonium salts of the following formula are used as salts of quaternary ammonium compounds

R

I

N-R

BUT

sn.

where R is an alkyl radical of Ci-Cs or hydroxyethyl radical -CHjCHgOH; R is an alkyl radical of Ci-Cis;

 Br-I-, BIO-SO ,, -, СНзЗг (СНз) 2Р04-- or Сюг.